Return error when width or height are not set as integers (#61)

api/resources/prices.py

@@ -1,7 +1,7 @@
 from api.models.external_print_product import get_cheapest_canvas_product, get_cheapest_poster_product
 from flask import Blueprint, request, jsonify
 from api.helpers import check_api_key
-from api.validators import validate_number, validate_exists
+from api.validators import ValidationError, validate_number, validate_exists
 from api.models import (
     Inquiry,
     Market,
@@ -49,6 +49,9 @@ def wallpaper():
     designer = get_designer()
     reseller = get_reseller()
 
+    if width is None or height is None:
+        raise ValidationError("width and height must be integers")
+
     materials = Material.query.wallpapers().all()
     data = []
     for material in materials: